There are several possiblities
If you were not offered medicine in the first round, it is likely that you might be offered a bonded medical place in the late round. However, if your only preference is for an unbonded place then if your ranking is high enough (that is higher than the ranking of students already offered a bonded place) than you might get an offer if there are any vacancies. If you were offered a bonded place in the main round you are automatically considered for a unbonded place in the late round.
The associate dean of the faculty told me there are very few places offered in the late round as they offer more places than available in the main round (i.e around 250 offers for the 180 places as they expect some interstaters to reject their offers) However, he did tell me they had trouble in the past fillling bonded places.
So good luck!